I agree with you completely; however the courts have veered far left since the 60s, even OJ Simpson got custody of his kids away from their grandparents in spite of being convicted in civil court of wrongful death (killing their mother), after the travesty of his criminal trial.
Many judges also have a double standard -- a divorcing husband has "needs", so it's ok if he sleeps with another woman he's not married to in front of his kids, even before the divorce is final; but if a woman dates, she can lose custody, even if she was not the adulterer. Thank you, "no-fault" divorce, which has done nothing but remove all justice from marriage-breaking. There is no universal standard, and results are all over the map when it comes to custody, or any other part of divorce.
It is ironic, given that one of the rallying cries of the feminist movement was "biology is NOT destiny" when the feminists wanted fathers to take a more active role so they could go to work outside the home -- but now the courts favor any kind of nasty biological parent over any upstanding adoptive parent. Biology seems to trump every other consideration. Disgraceful.
“but now the courts favor any kind of nasty biological parent over any upstanding adoptive parent”
It’s important that it be that way... Overall, there is no substitute for the natural parent. Even if they pick their nose and eat peanut butter out of the jar.